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Published on: December 22, 2018
Enhanced performance in quasi-isodynamic max-J stellarators with a turbulent particle pinch
G G Plunk1, A G Goodman1, P Xanthopoulos1
1Max-Planck-Institut für Plasmaphysik, 17491 Greifswald, Germany.
Abstract:
Recent stellarator reactor designs demonstrate mostly outward turbulent particle transport, which, without advanced fueling technology, inhibits the formation of density gradients needed for confinement. We introduce "SQuID-τ," a self-fueling quasi-isodynamic stellarator capable of sustaining density peaking through inward particle transport caused by turbulence. Temperature and density profile predictions based on high-fidelity gyrokinetic simulations demonstrate enhanced performance, significantly relaxing constraints on the size and magnetic field strength for reactor designs.
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